I have been asked a few questions about these tools, so I will try to answer them for everyone.
The tools are made from 1/8 inch carbide blanks.
I run the tools at 10000 rpm. I would love to run faster but that is the limit on my machine. I know they work well as low as 7500 rpm. The faster you can spin this tool the faster you can feed it. 50000 rpm would be great, perhaps somone will be able to try this.
I will be charging 6.50 + shipping and handling if the trial period gets a good response.